Reverse mechanism.



No. 793,855. ATENTBD JULY il, 1905. F. G. S'INZING. REVERSE MEGHANISM.

APPLIGATION FILED AUG.31,1904,

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I if# E@ wf i.. .y f 1% No. 793,855. PATENTED JULY 4, 1905. P. C. STINZING.

REVERSE MEGHANISM.

APPLIUATION FILED AUG.31,1904.

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)Patented July 1, i90".

.FRANK C. STINZING, UF UNION, NEW JElitilY.

SPECIFICATION forming' part of Letters Patent No. 793.855, dated July zl, 1905.

Application filed August 31, 1904. Serial No. 222,849.

citizen ot the United States, residiiig .in the town ol Union, in. the county oi Hudson and State ol New Jersey, have invented a new and useful lniprovement in .lteverse Mechanisni, ci which the l'ollowing is a specilication..

This .invention relates to reverse mechanisin l'or automobiles 5 and its object to provide means whereby in a continuation ol: the direct sliding movement ol." the change-speed gears upon tl 1e main driving-shaft a reverse pinion is automatically iiiterposed between the .low-smreal gear and its coacting spurwheel upon the counter-shalt to automatically reverse the direction oi'A motion imparted my improvement also including means whereby with the direct sliding .movement ol" the change-speed gears in the opposite direction to successively engage the several changespeed gears the reverse pinion aforesaid is automatically disengaged from its operative position before the several change-speed gears are successively engaged with the several spur-wheels upon the counter-shalt.

In brief, my invention consists oi" a bellcrank lever pivotally connecting the rod employed in communicating sliding movement to the change-speed gears upon the main driving-shaft with a link carrying a guidepiece whose function is to alter the position ol" the reverse-pinion according to the position. given said guide-piece. Said bell-crank lever is mounted on a pivotal support and is so arranged that while one oi its arms is describing an are :in moving the aforesaid guidepiece in. the iriertormance ot its itunc tions the other arm oit said lever in its movement carries its pivotal connection with. the changespeed-gmir-operating rod past the dead-cen.- ter in readiness lor the requisite pull or thrust wherewiih the change-speed gears are opcratcd.

ln the drawings accompanying this application, Figure l is a vertical longitudinal section oi a system of change-speed gearing including my iminoved reverse mechanism, the latter being shown in operative arrangement, Fig. 2 is a transverse section taken on the line 2 2 of Fig. l. Fig. 3 is a view corresponding with Fig. 'l and showing the reverse mechanism disengaged, the transmission being shown with. the high-speed gears in operatioi'i; and Fig. Aet is a transverse section taken on the line t a oi' Fig.

Lilie letters el" reference indicate corresponding parts in all. the 'figures The letter A indicates the usual iorin ofV casing tor transinission.- gearing, and B a main driving-shaft having a square portion. upon which the change-speed gears t, t, and f'r are slidable.

(l indicates the usual countei.sl1aft, having the spur-wheels c, c', and c2 l'ast thereon, said counter-shaft having the usual bevel-gear eS for transmitting power to the mechanism lor operating the driving-wheels ol" the vchicle. (Not shown.)

Attached to the casing A is a longitudinal guide D, within which slidably placed a guide strip or piece d, having an inclined slot (Z, which terminates at its opposite ends in horizontal ways d cl3, respectively. Vertically slidablc in a guide E, that project-s from. the casing, is a bearing member e, hav'- ing a hooked extension c, which latter is entered within the slot d, whereby said member e is governed as regards its vertical movement according to the horizontal movement ol guide-piece (l. '.lhe bearing .member e is provided with a transversely-proj ectii 1g pivot e2, to which is pivoted. the forked endfolE a carrier F, consisting ol' a member having a central pivot f2, by which `it is sup]')orted `from the casing, and said member at the opposite side ot its pivot lf2 is provided with a yokef, within which is pivotally carried an idler G, which constitutes the :reversingpinion.

Mounted upon a rod or shaft ll, which is pivotally supported by the inachi11e-trame, is a bell-crank lever fl, having the arms t' fi, while an arm 71 secured to the shaft H, is adapted to rock the latter through the inedium oi a rod t, which is adapted to be operated b y a hand lever (not shown) in the manner well known .in this art. The leverarm 'i is pivotally connected with a rod J, which at its opposite end is pivoted to a yoke- IOO stem carrying the usual yoke j for moving l the change-speed gears. The bell-crank lever-arm i is pivotally connected with a rod l K and pivotally unites with an extension l: j of the guide-piece d to move the latter. In the views illustrated in Figs. l and 2 the l rod lt has been moved to rock the bell-crank l lever l to the position indicated, wherein the arm i is in a substantially vertical position, having drawn the guide-piece rl toward the left, in which action the hooked extension c has been lowered through the travel accomplished bythe guide-piece (l, so that the idler G hasbeen moved upwardlyinto engagement with the spur-wheel c and the low gear li, whereby reverse motion has been communicated to the vehicle driving-wheels. Movement of the rodlr in the oppositedirection this movement as accomplished being indicated in Figs. 3 and ahas produced the following result: lt has rocked the bell-crank lever l so that the rod K has impelled the guide-piece (l toward the right, whereby the slot cl has raised the member e, and the carrier F has swung upon its pivot and removed the idler G away from contact with the spurwheel c and low gear l/, enabling the transmission of power to be communicated to propel the vehicle driving-wheels forwardly. ln the various stages of the movement referred to the low gear l/ may have been placed in mesh with the spur-wheel c, the middle gear b2 may have been placed in mesh with the spur-wheel c, and, as illustrated, the high-speed gear lr* may have been placed in mesh with the spur-wheel c2.

Particular attention is directed to the position of the bell-crank lever-arm i with relation to the rod l at the time when the reverseidler G is in mesh with the gear l/ and the spur-wheel c. lt will be noted that in the position shown in Figs. l and 2 the low-speed gear 1) has been moved past the spur-wheel c, and therefore is out of mesh therewith, while the idler G, being of sufficient width, is 'moved into mesh. with both saidvlow-speed gear and spur-wheel, so that now when it is desired to remove the idler G out of mesh the arm 'i/ of the bell-crank lever in describing its are moves the rod K a relatively considerable distance over to the right, whereby the guide-piece d performs its function of elcvating the bearing member e, and during said operation the arm t of the bell-crank lever in rocking over the dead-center of its pivotal connection with rod J imparts but a trilling movement to said rod el and to the change-speed gears 5 but directly said deadcenter is passed and continuing the movement toward the right of rod lt then the arm 'i swings outwardly and draws the low-speed gear l1 into mesh with the spur-wheel c. Continuation of this movement of the rod 7i enables the middle, and subsequently the high-speed, gears to mesh with their respective spur-wheels, as is obvious. Hence the main feature of my invention resides in the properties possessed by the bell-crank lever l, enabling the change-speed gears to remain substantially unmoved while the reversing-idler G is being either placed into mesh with the low-speed gear b and spurwheel c or removed from such meshed engagement.

By means of the horizontal ways (l2 and cl3, which engage with the hooked extension e of the bearing member e when the idler G is either in a meshed position or supported in inactivity, it will be seen that said idler G is thereby locked in these respective positions.

Having now described my invention, l declare that what l claim is l. Transmission mechanism comprising a main driving-shaft, a set of change-speed gears slidable thereon, a counter-shaft, and a set of spur-wheels carried thereby and adapted to mesh, respectively, with. said slidable gears, a pivotally-supported idler adapted to be interposed between one of said slidable gears and an adjacent spur-wheel, a guidepiece for actuating said idler', a rod controlling the movement of said guide-piece, and a rod controlling the movement of said slidable gears; together with a pivotal connection between said rods to regulate their relative movements, whereby, during the operative lnovement of the guide-piece in either placing the idler in mesh between a slidable gear and an adjacent spur-wheel, or in removing it from such meshed engagement, the slidable gears have practically no longitudinal movement.

2. Change-speed gearing for automobiles including a main driving-shaft, variable gears slidable thereon, a counter-shaft, variable spur-wheels carried thereby, and means for moving said slidable gears longitudinally, a pivotally-supported bearing member, a reverse-idler carried thereby, a pivotal support for said bearing member, a guide-piece having an inclined slot to receive a projection from said support, means for actuating the guide-piece and slidable gears unitedly, and means enabling the bearing-member support to move the idler either into or out of engagement with a slidable gear and adjacent spurwheel while the variable gears remain rela- IOO IIO

tively inert with respect to their longitudinal movement.

Change-speed gearing for automobiles including a main driving-shaft, variable gears slidable thereon, a counter-shaft, variable spur-wheels carried thereby, and a rod having means for moving said slidable gears longitudinally, a pivotally-supported bearing member, a reverse-idler carried thereby, and a guide-piece for actuating said bearing member to place the reverse-idler in mesh with an adjacent slidable gear and spurwheel to reverse the motion communicated to the counter-shaft, and to remove said reverso-idler 'lilo'n'i suoli ongagon'iont; tiigetliol* with :L pivotal shzlflit, i boll-orzml lovoif Scollied tflieloon and pivolvzilly ooi'ilioctving lilijiougll its respectivo arms with said rod :iml guido-picco, 21ml moans for turning said slmlt to ello/ot lili@ operimoii ol changing i spur-wheel, to l'ovoi'so lille motion communicated to the counter-Slmllv, :md to i'omovo zo spoed and aplilyug oi' disconnecting Lllo 1'0- v oiS G-ji dl or.

4. Cliuigo-spood gearing for automobiles, including` :i iuzmiu fllivinglizil'li, Variable gom's slidablc lx'hefioou, :L oouiitor-slmllu, vm'i- :1blu spur-wliools onfil'iod tho/roby, nml moons iloi moving Said slidzifblo gon/rs longitudinally,

n, pivotally-supported bearing' member, n` iong niombor to plzioo tho iovon Verso-'klim' ozuiioil tlwi'oby, und :i lwll-oizml lovoi' VFor nutolnzilvioally actuating' solid bom'- Y idloi in imosli, Wil/li an. adjacont Slidnblo gom' :mil

Said idler from suoli ongnigomonti FRNl C. TVIN'ING.

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